Springerville-Alpine Geothermal Project: results of heat flow drilling

Eighteen sites were selected for heat flow drilling in the Springerville-Alpine geothermal project area (Fig. 1). The site locations were selected on the basis of a preliminary site evaluation (Stone, 1979, Appendix A) and a reconnaissance electrical resistivity survey (Young, 1979, Appendix C). Justification for site locations was submitted to the Bureau of Reclamation, Boulder City, Nevada, in March, 1979 (Appendix D). Four holes, Nos. 107, 114, 116, and 118, were to be drilled to 450 m depth; the remaining holes were to be drilled to 150 m. Extended cold weather and snow in the project area delayed the start of drilling until May, 1979, and even by that date poor access necessitated revisiting some drill-site priorities. Five heat flow holes were completed by August, 1979 (Fig. 2), at which time the drilling operation was moved to Clifton, Arizona. Drilling dates, total depths, and hole locations are presented in Table 1. (21 pages)Documents in the AZGS Document Repository collection are made available by the Arizona Geological Survey (AZGS) and the University Libraries at the University of Arizona. For more information about items in this collection, please contact azgs-info@email.arizona.edu